:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --bg-dark: #0f172a;
  --card-bg: rgba(30, 41, 59, 0.5);
  --glass-border: rgba(255, 255, 255, 0.08);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: 'Plus Jakarta Sans', sans-serif;
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.05) 0px, transparent 50%);
}

.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
}

.sidebar {
  width: 280px;
  background: rgba(15, 23, 42, 0.8);
  border-right: 1px solid var(--glass-border);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 14px;
  color: var(--text-muted);
  font-weight: 500;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.nav-item:hover, .nav-item.active {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary);
}

input, select {
  background: rgba(15, 23, 42, 0.6) !important;
  border: 1px solid var(--glass-border) !important;
  color: white !important;
}

.btn-glow {
  background: var(--primary);
  color: white;
  box-shadow: 0 8px 20px -6px rgba(99, 102, 241, 0.6);
  transition: all 0.3s ease;
}

.btn-glow:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 25px -6px rgba(99, 102, 241, 0.7);
}

tr.row-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.tab-content.hidden { display: none; }